Update Dockerfile to remove policy-base, policy-os

Correction to previous commit "Move docker_*.sh scripts into
policy/engine" as attempt to build docker image will result in failure to
pull the policy-base image from nexus
The policy-base and policy-os images are removed in favour of including
the contents of those images directly in the policy-pe image

Issue-ID: POLICY-651
Change-Id: I46f4ac0d529fc95ea702809eee466af3d1121717
Signed-off-by: mmis <michael.morris@ericsson.com>
1 file changed